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习题练习:Physics Unit22: Electromagnetic Waves

 作者: physics   总分: 35分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月28日 10:07  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The basic equations for all electromagnetism c6qdd g13c*ba9m6jvc were developed by

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric field is proqvz/uwbej+b8 p :9r9hx1/x usl+zb 19k ao y/aduced by a

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A changing electric fielgajc7ln79 fykd9 jg4wpwr 5/ 2d will produce a

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All electromagnetic waves travel throuj1o9lc)b:e xz :e.kv/,nz j70cconu d gh a vacuum at

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a vacuum, the velocity of all electromagneticj(o7 b-6/apu+ uocx e/0bz1 sje2dduj5z r7c c waves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves :r9+r n ocm:nr,xc vwr7r )bk1can travel through

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The strength of both the electric and magnetic fields in the radiation f)h5ctzlrrl t8r2x y i:q4m6uqv5 g7b 3ield are found to decrease with dist:ryv4 7 ihx6rqgctubl) 382r z55qlmtance as

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The $E$ and $B$ fields in electromagnetic waves are oriented

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is travel/f(;igi6m,,et dkr pk6ac5 qding to the east. At one instant at a given poin6gad,/ipce5 ,qi k(f6mtdr;k t its $E$ vector points straight up. What is the direction of its $B$ vector?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is radiated by wdy zscl (k8l7p0 x93ga straight wire antenna that is oriented vertically. What should be the orientation of a straight wire receiving antenna? It s9y lk pw(sx8zcdl 07g3hould be placed

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic wave.bjpris1 z 97 xvg:ep.s are

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Of the following, whic*f/hc4c dp s0dh is not electromagnetic in nature?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Visible light ranges in w8 b3+ +ta8h l5zmmske6fs *kstavelength from

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy an electromc7.j :usucmw(gar c+5agnetic wave transports per unit time per unit area is theac+muj sw7.cru5 g:(c

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The force per unit area exerted by an electromagnetic wave 0n-hi3c(i0oopo eh3hxe n46 i is called the

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following correctly lists electromagnetic waves in order from lo*w( : zhx7onz1ddq8uqngest to shortest wavelength8z q(u ho wzxqnd1*7:d?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field in an EM wave has a peak value ok1pefq23:)t9wm vmy s.p*qf d f 2.0 V/m, what is the peak value of the ma 9y v: m d*k)fqpt3efq1m2.pwsgnetic field?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of light waves if their frequency .z9ld5td1kjw3dqf ag ;z y), uis $5.0 \times 10^{14} \; Hz$?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength o wqwe 1jyr7 i,vd/2qx9f a 92.9-MHz radio wave?

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of a radio wave signal trn+vsp/u 7 9qesansmitted at a frequency of 7.2 qe+p7vn u9/ss MHz?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength for the carrier wave in the station WBR2h: *;zzfaqk nc0 8fcup s9.pm4g3ymuN 1460?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of 20 mm microwavesm 5 6lg1(1h6 khfrykma?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far does light tr + 9m7lj9afgbiavel in 1.0 ms?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take light to tr )u11qehtur t.nrue3xe2bp7,avel 1.0 m?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it taket3z l.vt a )-*hdn3dhd the signal from a local radio station to travel 20 miles?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far is a light year (the d i, s(rap yhp qafzc0/pe;z k+:-;;vloistance light travels in a year)?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A radar receiver indicates that a transmitted pu iz4m-pp2k :d5 ge(ryqldq9tox9f7 d6lse return as an echo in 20 ms after transmission. How far away is the ref tl(4 d7-q9pm2efyqdog:9kxz5rd p6ilecting object?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reache9ys1c qqqz/ .ms the Earth (above the atmosphere) at a rate of abouqs.qyz1 cqm/9 t $1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the electric field.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reaches thefoyt,ngd(192 zdz+ gz Earth (above the atmosphere) at a rate of about dod y9(t,g gz2z1+zn f$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the magnetic field.

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of the electric field at a distance 2.5 m from a 100jt )7no (fz/wzwgo2.j-W light bulw2j gz 7fj( t.)nwozo/b?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of th .sarz6:a 7l5 xlh.zlme magnetic field at a distance 2.5 m from a 100-W light bulb?hz .sl r:7z5lamxa. 6l

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrow beam 2.00 mm in diamefj p8 tua:hl;v6f(l y6ter. What is the average (rms) value of the electriclu l pa;tjf(y6: 8vhf6 field?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrolao (l9f3:gg4o 7 k dbt)lp)wvw beam 2.00 mm in diameter. What is the average (rms) value of the magneti ) (4f3gtdw7glb:9 ) avlopkolc field?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is transported 64937d+sq. iqwmxjwlh+rfmlxl44t v across a $1.00 \; cm^{2}$ area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Estimate the average power output of the Sun,e azfz* nb);4m given that about $1350 \; W/m^{2}$ reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is $1.5 \times 10^{11} \; m$.

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总分:35分 及格:21分 时间:不限时
未答题: 已答题:0 答错题:
当前第 题,此次习题练习共有 35 道题

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